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A line with a slope of – 5 passes through the points (6,r) and (7, – 9). What is the value of r?

A line with a slope of – 5 passes through the points (6,r) and (7, – 9). What is the value of r?
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5 votes
A line with a slope of – 5 passes through the points (6,r) and (7, – 9). What is the value of r?

asked
User Matthias Huschle
by
8.1k points

1 Answer

4 votes

Answer:

r=-4

Explanation:


gradient = (change \: in \: y)/(change \: in \: x) \\ - 5 = (r - - 9)/(6 - 7) \\ - 5 = (r + 9)/( - 1) \\ - 5 * - 1 = r + 9 \\ 5 = r + 9 \\ 5 - 9 = r \\ r = - 4

Hope that this is helpful.

answered
User Issy
by
8.8k points
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